Former National Security Advisor Jake Sullivan will be giving the commencement speech at University of New Hampshire’s ...

President Donald Trump announced former national security advisor Mike Waltz as his choice to serve as ambassador to the U.N.

Trump's appointment of Secretary of State Marco Rubio to temporarily replace Mike Waltz as national security advisor is the ...

National security adviser Mike Waltz is leaving his White House post, although soon after reports about his departure were ...

Trump said he's nominating Michael Waltz to be ambassador to the United Nations, while Secretary of State Marco Rubio will ...

President Donald Trump says he is nominating national security adviser Mike Waltz as United Nations ambassador while ...

President Donald Trump announced that Mike Waltz had been ousted as national security advisor. He was previously caught up in ...

President Trump recently discouraged the use of the Signal app after controversy over a group chat of administration ...

President Trump spoke to reporters from Air Force One Sunday night, answering questions from the national security advisor to ...

In a continuation of Signalgate, Hegsgeth came under scrutiny again last month, when the Washington Post reported that he not ...

Fox News Digital took a look at whom President Donald Trump could select to replace former national security advisor Mike ...

President Donald Trump has gone through his share of national security advisers. But he doesn't hold the record, yet.